Water closet bowl



July 3, 1934. G. P. GAVIN WATER CLOSET BOW-L Ef-iled Jan. 27, 1955:

Patented July 3, 1934 UNITED STATES PATENT OFFICE Application January 27,

4 Claims.

My invention relates to water closet bowls of the jet type, that is, wherein the discharge from the bowl is aided by a jet discharged from a jet opening or nozzle of relatively small diameter, and the object of my invention is to provide such a closet with a self-cleaning jet wherein the flow of water automatically cleans the jet passageway and there are no dead spaces or back washes to allow the accumulation of filth and soil.

I attain this object by the structure illustrated in the accompanying drawing, in which Figure 1 is a longitional section of my improved water closet bowl, and Fig. 2 is a sectional view of the inlet passageway and jet passageway taken along the lines 22 of Fig. 1.

Similar numerals refer to similar parts throughout the several views.

My invention is particularly adapted to the construction shown in my patent issued Septemher 1, 1931, No. 1,820,300, although its application is not limited to this construction, as it has features desirable in connection with any water closet bowl of the jet type.

In the drawing the numeral 1 indicates a closet bowl having the usual siphon discharge passageway 2, a flushing rim 3 and a jet nozzle 4. The water is admitted to' the bowl through the supply opening 5 and enters the reservoir 6 from whence it passes down the supply passageway 7 which extends to the front of the bowl and has communi cation with the flushing rim, it being understood that the supply passageway extends around the siphon discharge passageway 2 as shown by the dotted lines of Figure 1.

With the construction shown, as well as with ordinary siphon jet constructions, the supply passageway '7 at its lowermost point, below the jet nozzle 4, forms a depressed portion or well 8. The natural flow of water causes a back wash or dead space in this well, with the result that sediment and soil dropping through the jet nozzle 4 or otherwise introduced tend to accumulate at the bottom of the well 8 creating an undesirable and unsanitary condition.

Furthermore, with the exact type of bowl herein described, any material which may be dropped through the jet nozzle 4 may be carried upward by the force of the Water and obstruct the passageway '7, preventing communication with the flushing rim 3. When this occurs it is extremely 1933, Serial No. 653,769

difficult to dislodge such object. To obviate these difficulties, I provide a hood 9 adapted to enclose the lower side of the jet nozzle 4 and extend along the supply passageway '7 to a point some distance above the jet, thereby forming an auxiliary or branch jet passageway 10 which adjoins the siphon discharge passageway between the siphon discharge passageway and the supply passageway and conforms closely in contour to said siphon discharge passageway. The hood 9 is preferably formed with a somewhat outwardly flaring end 11. With this type of construction it is obviously impossible for any material which may accidentally be dropped through the jet nozzle 4 to become lodged in the passageway 7, since this material is retained in the passageway 10 and discharged in the next flushing of the bowl. The curvilinear shape of the hood, without acute angles, prevents the presence of any dead spaces where waste and soil may accumulate.

The force of the water passing through the passageway 10 thoroughly cleans and scours it upon each flushing of the bowl. The flared end 11 assists in diverting a portion of the water passing through the supply passageway 7 into the passageway 10 where it is discharged through the jet nozzle 4.

Inasmuch as most waste and soil which ordinarily accumulate in the well 8 find their way into the passageway '7 by means of the jet nozzle 4, it is obvious that the construction herein described will prevent unsanitary accumulation in the well 8, as any material which finds its way through the jet nozzle 4 will be retained in the passageway 10 and redischarged into the bowl upon the next flushing thereof.

I claim:

1. In a water closet bowl the combination of a flushing rim, a siphon discharge passageway, a

jet nozzle positioned to discharge therein, a sup-- ply passageway extending downwardly along said siphon discharge passageway, thence upwardly to the front of said flushing rim and a branch passageway from said supply passageway to said jet.

2. In a water closet bowl the combination of a flushing rim, a siphon discharge passageway, a supply passageway extending downwardly along said siphon discharge passageway, thence upwardly to provide communication with the front of said flushing rim, and a branch passageway enclosing said jet nozzle, said hood extending upwardly within said supply passageway and having communication therewith.

4. In a water closet bowl the combination of a flushing rim, a siphon discharge passageway, a jet nozzle positioned to discharge therein, a passageway to said jet and a supply passageway to said flushing rim, said supply passageway being contiguous to said jet passageway and having communication therewith.

GORDON P. GAVIN. 

